A few days ago I was surprised when my OM-D told me the battery was about to die. I saw the two bar light when it showed up, but I don't recall seeing anything lower than that before the battery dying screen. The battery ran its course after about 400 shots + few videos so it was behaving normally. It was a really bright sunny day and I wear glasses so I might have missed the later warnings(blinking?) in the viewfinder. However those warnings must have been really brief... I might have taken just 20 more shots in between the two bar and the dying screen. I looked up the battery warning level in the full manual but couldn't find any useful information on what the 0 ~ +/-2 range represents. Does anyone know what they are?